Switch-operating device.



n. 0; Gannon.

SWITCH OPERATING DEVICE. APPLICATION FILED FEB. M31914 PatentedSept. 28,1915.

i To aZZ whom it concern:

' UNITED STATES PATENT ()FFIGE.

avin :o. GORDON, or CHICAGO,

Be it knownthat I, Davin D. G'oRDoN, a citizen of the United States,residing at Chi- 'cago, in -thecounty of Cook and State of Illinois,have invented a certainnew and useful Improvement in Switch-OperatingDevices, of whichithe following is a full,

- clear, concise, and exact description, refer- .ence being had to theaccompanying drawings, forming a part of this specification.

My invention relates to switching devices and is'o f more particularutility in connection with sockets for holding translating de vices suchas lamps.

invention is. designed to bean im-' provement over. the form nowutilized in operating switching devices of the character called. pullsockets which are operated through the agency of a chain. My inventionis designed, to overcome the necessity of having the chains enter withinthe confines of the socket, thus to obviate the danger of havingthese'chains become entangled or disabled in theoperations of thesocket. v

, In accordance with my invention, I attach I 3. preferably rigidtension member to the.

-operating portion ofth'e switch movement and have this tension memberextend, when in itsnormal retracted position, to the outer -wall of thesocket, where a chain may be attached .to it for the purpose ofoperating it. -This tension. member is curved and by reason ofitscurvature accommodates itself in such a manner that it can beoperated by the chain no matter what may be the direction of pullexerted by the chain. The pull may be either up or down or at an anglethereto. Whenever a pull is exertedby the chain in eitherdirection,'this' tension member being pivotally mounted at itsextremyity brings itselfinto position so that its curvature willaccommodate it to be drawn by the chain to operate the switclrelement.

tion may take more in detail by referring .to the accompanying drawingllustrating I will explain one form which my inventhe same in which IFigure 1 represents a sectional viewof a Switch movement havlng myimproved operati-ng device;.Fi-g.2 shows the same moveswrron-ornna'rmeDEVlICE.

Specification of Letters Patent.

rumors, ASSIGNOR Tofiros'r ELECTRIUMANUFAG- meme COMPANY, or TOLEDO,OHIO. 1

. P d sen k z 1915 Application filed February 12,1914, Serial No.818,238.

reverse its position, and Fig. 3 is a'sectional view on line 60-410f-Fig.'1- D My improved structure: contemplates, for instance, a socketwall 1, the-screw threaded portion of which and the central contact ofwhich are only partially illustrated asthey "do-not form parts of theinvention; .l'l- ,do

however show circuit-terminals 2, wh-ich are mounted withinthesock'etand a movable contact element 3 adapted periodicallyl toengage the circuit terminals 2 andto efl 'ect circuit closure or openingas the case may be. A bus bar 3 connects one of the circuit terminals 2with the screw threaded contact element 2* of the socket. The mechanismto control this switch arm 3v is illustrated in my application SerialNo. 818,237, filed Feb. 12, 1914i, in which this switch member 3 ismoved by snap 'action to effect both a quick make and a quick break' ofthe circuit controlled thereby. This switch element 3 is pivoted upon ashaft 4 and is controlled'by a rotatable element 5 having two restingpositions governed by the spring 6, which spring always retains this"element 5 in line I parallel to itself. This spring is'prefe'rablycoiled about the stud 7, theopposite arm of the spring engaging. an arm8 also pivotally mounted on the stud 7. The arm 8 carries a further arm-9 pivotally mounted thereon andwhich is controlled by a spring 10 whichtends to force it into a contra-clockwise di rection of rotation.The'arm 9 has a pair of fingers 1 1 and 12 which engage thero tatableelement 5 and move it fromone resting position beyond its position ofrepose sov that the spring 6. completes theremainder-of the movement ofthis element to its alternative resting position by snap action. Thisrotatable element 5 is'rotatably mounteclby means ofthe studs l3'andcarries aprojectionor cam 1i adaptedto e'nga'ge'the \v'alls of the slot15' providedin the switch. armfi.

. It will be readily apparentfthat'if-the movable element 5 is in theposition shown in Fig. 1, that the arm '8 is away from the contact 2 andthat if the rotatable element ,5'

fit)

tension member automatically opposite side and will be holding theswitch arm 3 aga nst the contact .2 having forced it ,over by snapaction in response to the actua-.

tions or the spring t). The breaking of the circuit likewise isaccomplishtal by snap aetion. This detailed description of the switchingdevices'is given merely to lead to a. proper understanding ol'v theentire structure. itbeing umlerstoml. of course. that my sume thatxatension is being exerted in the direction of the arrow by the chain It).then the arm lb may rest. upon the upper wall- 20, amt will slide overit by reason of its curvature. thereby drawing the arm 8 m a.eontra-clm-kwise direction to etleet movement o t' the switchingelements. Now it. for

instance. the chain 16 is pulled in the opposite direction as shown indotted lines on Fig. 1. then the tirst initial pull on the chain willnaturally cause the tension element 18 to reverse its position so thatits curvature is opposite. and a further pull of the chain in thisopposite direction will likewise cause the proper contra-clockwisemovement o t the arm 8. Also it the chain were pulled in a. direction atright angles to that shown in the tigures.-the tension member [8 wouldaccommodate itsel t' and cause proper actuations o t the arm 6. In thisway I. have provided a universally sell-adjusting to aceonunodate itselfto the direction of pull of, a chain or other suitable tlexible tensionmember to properly control the movements-.o't a pivoted arm shch as thearm 8. The outer. 'h'ell lt ot' the socket doesnt guide the ari Fromwhat has' V thought the natureHol' iny entirely clear and re;u.j lskilled in the art. h

llaving however thlusde pparent to those scribed one form which myinvention un-iytake.what lclaim as new and desire to secureby Letterslatent'is:

l.. device 'ol' the clintfuetec described having a movable elementl'or'controlling, a switch. a rigid bent tension member pivotallyattachedat one extremity to and adapted to move said element. a guidefor the opposite extremity of said member past which it is movableforming a support for arm 8 I provide it Now it'- the said oppositeextremity o't said member, and means tor exerting a pull on the oppositeextremity of said member.

'3. device of the character described having a movable element forcontrolling a switch. a rigid bent tension member pivntally attachedat.one extremity to and adapted to move said element. a guide l'orming asupport for the opposite extremity of said member with which said memberhas sliding engagement to detine the movement of said oppositeextremity. and means tor exerting a pull on said opposite extremity ofsaid tension member. said member by reason ol its bent condition.pivotal mounting. and engagement with the said guide alining itself inthe plane ol the direction of the exerted pull.

3. device ot" the character described havinga movable element l'orcontrolling a switch. a rigid curved tension member pivotally attachedatone extremity to and adapted to move said element. a guide forming asupport for the opposite extremity ot' said member with which saidmember has l. lit a device ot the tlinl'uetel described the combinationwith a movable element for controlling a switch. a rigid curved tensionmember pivotally associated at one extremity with said movable element.a guide t'orming a support for the opposite extremity of said tensionmember. and means for exerting a pull at the opposite extremity of saidltlt) tension member, said tension member by.

reason of: its curvature and pivotal mounting alining itselt in theplane of the direction ot the exerted pull.

device of the character describe-d having a pivoted arm for controllinga switch. a rigid curved tension member swingingly attached at oneextremity to and adapted to move said arm, a guide forming a support Forthe opposite extremity of said member with which said member-has slidingengagement. and means For exerting a pull on saidopposite extremity ofsaid tension member. said member by reason of its enrvature and swingingattachment alining itself in the plane o t the direction o t" theexerted pull..

t). In a device of the character described the combination with apivoted arm for controlling a switch, a rigid curved tension member'swingingly monntedat one extremity of said pivoted arm. a guide forminga support for the opposite extremity llt) tension member, and means forexerting a my name this 22nd day of Januu A. II. pull at the pppositeextremity of said ten-' 1914.

s'ion member, said tension member by'reason of its curvature andswinging mounting 5 alin'ing'itself in the plane of the'direction ofWitnesses:

the exerted pull. HAZEL ANN JONES.

In witness'whereof, I hereunto subscribe A. L. JONES.

